:root {
  --colour-field-paper: #e8e5da;
  --colour-paper-bright: #f5f3ec;
  --colour-tactical-sage: #788777;
  --colour-sage-deep: #405347;
  --colour-signal-orange: #c65a25;
  --colour-steel-blue: #4e6b79;
  --colour-steel-mist: #d5dee0;
  --colour-graphite: #202729;
  --colour-graphite-soft: #53605d;
  --colour-rule-grey: #b8b8aa;
  --colour-canvas-tan: #b7a883;

  --colour-page: var(--colour-field-paper);
  --colour-surface: var(--colour-paper-bright);
  --colour-text: var(--colour-graphite);
  --colour-text-muted: var(--colour-graphite-soft);
  --colour-border: var(--colour-rule-grey);
  --colour-link: var(--colour-steel-blue);
  --colour-action: var(--colour-signal-orange);
  --colour-focus: var(--colour-signal-orange);

  --font-heading: "Barlow Condensed SemiBold", "Arial Narrow", Arial, sans-serif;
  --font-body: Inter, "Helvetica Neue", Arial, sans-serif;

  --text-meta: 0.6875rem;
  --text-utility: 0.8125rem;
  --text-label: 0.9375rem;
  --text-body: 1.0625rem;
  --text-lead: 1.25rem;
  --text-section: clamp(1.5rem, 2vw, 1.625rem);
  --text-article: clamp(1.875rem, 4vw, 2.125rem);
  --text-display: clamp(2.375rem, 6vw, 3rem);
  --text-hero: clamp(3rem, 8vw, 4rem);

  --leading-tight: 1;
  --leading-heading: 1.08;
  --leading-body: 1.55;
  --leading-loose: 1.7;

  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 2.5rem;
  --space-8: 3.5rem;
  --space-9: 4.5rem;
  --space-10: 6rem;

  --container-max: 80rem;
  --container-padding: 1.5rem;
  --container-padding-mobile: 1rem;

  --radius-none: 0;
  --radius-control: 0.125rem;
  --radius-overlay: 0.375rem;

  --border-width: 1px;
  --border: var(--border-width) solid var(--colour-border);
  --rule-action: 2px solid var(--colour-signal-orange);

  --shadow-floating: 0 4px 14px rgb(32 39 41 / 10%);

  --transition-fast: 160ms ease-out;
  --transition-standard: 220ms ease-out;

  --texture-paper:
    linear-gradient(rgb(245 243 236 / 72%), rgb(245 243 236 / 72%)),
    repeating-linear-gradient(
      0deg,
      rgb(32 39 41 / 2%) 0,
      rgb(32 39 41 / 2%) 1px,
      transparent 1px,
      transparent 5px
    );
  --texture-coordinate:
    linear-gradient(rgb(78 107 121 / 8%) 1px, transparent 1px),
    linear-gradient(90deg, rgb(78 107 121 / 8%) 1px, transparent 1px);
  --texture-topographic:
    repeating-radial-gradient(
      ellipse at 15% 15%,
      transparent 0 12px,
      rgb(64 83 71 / 7%) 13px 14px,
      transparent 15px 25px
    );
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  min-width: 20rem;
  scroll-behaviour: smooth;
  text-size-adjust: 100%;
  -webkit-text-size-adjust: 100%;
}

body {
  min-width: 20rem;
  min-height: 100vh;
  margin: 0;
  overflow-x: hidden;
  background-color: var(--colour-page);
  color: var(--colour-text);
  font-family: var(--font-body);
  font-size: var(--text-body);
  font-weight: 400;
  line-height: var(--leading-body);
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img,
picture,
svg,
canvas,
video,
iframe,
embed,
object {
  display: block;
  max-width: 100%;
}

img,
video {
  height: auto;
}

svg {
  fill: currentColor;
}

iframe {
  border: 0;
}

button,
input,
select,
textarea {
  font: inherit;
}

button,
select {
  text-transform: none;
}

button,
[type="button"],
[type="reset"],
[type="submit"] {
  appearance: none;
  cursor: pointer;
}

button:disabled,
input:disabled,
select:disabled,
textarea:disabled {
  cursor: not-allowed;
  opacity: 0.65;
}

input,
select,
textarea {
  width: 100%;
  min-height: 2.75rem;
  border: var(--border);
  border-radius: var(--radius-control);
  background: var(--colour-paper-bright);
  color: var(--colour-text);
  line-height: 1.35;
}

input,
textarea {
  padding: 0.625rem 0.75rem;
}

select {
  padding: 0.625rem 2.25rem 0.625rem 0.75rem;
}

textarea {
  min-height: 8rem;
  resize: vertical;
}

input::placeholder,
textarea::placeholder {
  color: var(--colour-graphite-soft);
  opacity: 1;
}

input[type="checkbox"],
input[type="radio"] {
  width: 1.125rem;
  min-height: 1.125rem;
  padding: 0;
  accent-color: var(--colour-signal-orange);
}

input[type="file"] {
  padding: 0.5rem;
}

fieldset {
  min-width: 0;
  margin: 0 0 var(--space-5);
  padding: var(--space-4);
  border: var(--border);
}

legend {
  padding: 0 var(--space-2);
  color: var(--colour-graphite);
  font-family: var(--font-heading);
  font-size: var(--text-label);
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

label {
  display: inline-block;
  margin-block-end: var(--space-2);
  color: var(--colour-graphite);
  font-family: var(--font-heading);
  font-size: var(--text-label);
  font-weight: 700;
  letter-spacing: 0.05em;
  line-height: 1.2;
  text-transform: uppercase;
}

a {
  color: var(--colour-link);
  text-decoration-color: currentColor;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.16em;
  transition:
    color var(--transition-fast),
    text-decoration-thickness var(--transition-fast);
}

a:hover {
  color: var(--colour-signal-orange);
  text-decoration-thickness: 2px;
}

a:not([class]) {
  overflow-wrap: anywhere;
}

button,
input,
select,
textarea,
a {
  -webkit-tap-highlight-color: transparent;
}

:focus-visible {
  outline: 2px solid var(--colour-focus);
  outline-offset: 2px;
}

::selection {
  background: var(--colour-signal-orange);
  color: var(--colour-paper-bright);
}

main,
header,
footer,
section,
article,
aside,
nav,
figure,
form,
table {
  min-width: 0;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  margin-block: 0 var(--space-4);
  color: var(--colour-graphite);
  font-family: var(--font-heading);
  font-weight: 700;
  letter-spacing: 0.01em;
  line-height: var(--leading-heading);
  overflow-wrap: anywhere;
}

h1 {
  font-size: var(--text-hero);
}

h2 {
  font-size: var(--text-display);
}

h3 {
  font-size: var(--text-article);
}

h4 {
  font-size: var(--text-section);
}

h5 {
  font-size: var(--text-lead);
}

h6 {
  font-size: var(--text-label);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

p {
  margin-block: 0 var(--space-4);
}

small {
  font-size: var(--text-utility);
}

strong,
b {
  font-weight: 700;
}

em,
i {
  font-style: italic;
}

mark {
  padding-inline: 0.12em;
  background: var(--colour-canvas-tan);
  color: var(--colour-graphite);
}

abbr[title] {
  text-decoration: underline dotted;
  text-underline-offset: 0.16em;
}

hr {
  height: 0;
  margin-block: var(--space-6);
  border: 0;
  border-top: var(--border);
}

blockquote {
  margin: 0 0 var(--space-5);
  padding: var(--space-4) 0 var(--space-4) var(--space-5);
  border-inline-start: var(--rule-action);
  color: var(--colour-graphite-soft);
  font-size: var(--text-lead);
}

blockquote > :last-child {
  margin-block-end: 0;
}

figure {
  margin: 0 0 var(--space-5);
}

figcaption {
  margin-block-start: var(--space-2);
  color: var(--colour-graphite-soft);
  font-size: var(--text-utility);
  line-height: 1.45;
}

ul,
ol {
  margin-block: 0 var(--space-5);
  padding-inline-start: 1.35em;
}

ul:not([class]),
ol:not([class]) {
  display: grid;
  gap: var(--space-2);
}

dl {
  margin: 0 0 var(--space-5);
}

dt {
  color: var(--colour-graphite);
  font-family: var(--font-heading);
  font-size: var(--text-label);
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

dd {
  margin: 0 0 var(--space-3);
  color: var(--colour-graphite-soft);
}

table {
  width: 100%;
  margin-block: 0 var(--space-5);
  border-collapse: collapse;
  border: var(--border);
  background: var(--colour-paper-bright);
  font-size: var(--text-label);
}

caption {
  padding: var(--space-3) var(--space-4);
  caption-side: bottom;
  color: var(--colour-graphite-soft);
  font-size: var(--text-utility);
  text-align: left;
}

th,
td {
  padding: var(--space-3) var(--space-4);
  border: var(--border);
  text-align: left;
  vertical-align: top;
}

th {
  background: var(--colour-graphite);
  color: var(--colour-paper-bright);
  font-family: var(--font-heading);
  font-size: var(--text-label);
  letter-spacing: 0.05em;
  line-height: 1.15;
  text-transform: uppercase;
}

tbody tr:nth-child(even) {
  background: var(--colour-field-paper);
}

code,
kbd,
samp,
pre {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

code,
kbd,
samp {
  font-size: 0.9em;
}

code {
  padding: 0.08em 0.28em;
  background: var(--colour-steel-mist);
  color: var(--colour-graphite);
}

kbd {
  padding: 0.12em 0.34em;
  border: 1px solid var(--colour-rule-grey);
  border-bottom-width: 2px;
  border-radius: var(--radius-control);
  background: var(--colour-paper-bright);
  color: var(--colour-graphite);
}

pre {
  margin: 0 0 var(--space-5);
  padding: var(--space-4);
  overflow: auto;
  border: var(--border);
  background: var(--colour-graphite);
  color: var(--colour-paper-bright);
  font-size: var(--text-utility);
  line-height: 1.55;
}

pre code {
  padding: 0;
  background: transparent;
  color: inherit;
}

.container {
  width: min(100% - (var(--container-padding) * 2), var(--container-max));
  margin-inline: auto;
}

.container--wide {
  max-width: 90rem;
}

.container--flush {
  width: 100%;
  max-width: none;
}

.surface {
  border: var(--border);
  background: var(--colour-surface);
}

.surface--paper {
  background: var(--colour-field-paper);
}

.surface--bright {
  background: var(--texture-paper), var(--colour-paper-bright);
}

.surface--sage {
  border-color: var(--colour-sage-deep);
  background: var(--colour-tactical-sage);
  color: var(--colour-graphite);
}

.surface--dark {
  border-color: var(--colour-graphite);
  background: var(--colour-graphite);
  color: var(--colour-paper-bright);
}

.surface--dark :is(h1, h2, h3, h4, h5, h6) {
  color: inherit;
}

.surface--sage-deep {
  border-color: var(--colour-sage-deep);
  background: var(--colour-sage-deep);
  color: var(--colour-paper-bright);
}

.surface--sage-deep :is(h1, h2, h3, h4, h5, h6) {
  color: inherit;
}

.surface--steel {
  border-color: var(--colour-steel-blue);
  background: var(--colour-steel-mist);
}

.surface--advice {
  border-inline-start: var(--rule-action);
  background: var(--colour-field-paper);
}

.surface--confirmed {
  border-inline-start: 2px solid var(--colour-steel-blue);
  background: var(--colour-steel-mist);
}

.surface--floating {
  box-shadow: var(--shadow-floating);
}

.surface--overlay {
  border-radius: var(--radius-overlay);
  background: rgb(245 243 236 / 88%);
  box-shadow: var(--shadow-floating);
  backdrop-filter: blur(8px);
}

.panel {
  padding: var(--space-5);
  border: var(--border);
  background: var(--texture-paper), var(--colour-paper-bright);
}

.panel > :last-child,
.surface > :last-child,
.content-group > :last-child,
.compact-group > :last-child {
  margin-block-end: 0;
}

.content-group > * + * {
  margin-block-start: var(--space-4);
}

.compact-group > * + * {
  margin-block-start: var(--space-2);
}

.stack {
  display: flex;
  min-width: 0;
  flex-direction: column;
  align-items: stretch;
  gap: var(--space-4);
}

.stack--compact {
  gap: var(--space-2);
}

.stack--loose {
  gap: var(--space-6);
}

.cluster {
  display: flex;
  min-width: 0;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-3);
}

.cluster > * {
  min-width: 0;
}

.cluster--compact {
  gap: var(--space-2);
}

.cluster--spread {
  justify-content: space-between;
}

.flow > * {
  min-width: 0;
}

.flow > * + * {
  margin-block-start: var(--space-4);
}

.flow--compact > * + * {
  margin-block-start: var(--space-2);
}

.flow--loose > * + * {
  margin-block-start: var(--space-6);
}

.eyebrow,
.meta,
.status-label {
  margin: 0;
  color: var(--colour-graphite-soft);
  font-family: var(--font-heading);
  font-size: var(--text-meta);
  font-weight: 700;
  letter-spacing: 0.12em;
  line-height: 1.2;
  text-transform: uppercase;
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.eyebrow::before {
  width: 0.5rem;
  height: 0.5rem;
  flex: 0 0 auto;
  border: 1px solid var(--colour-signal-orange);
  content: "";
}

.meta {
  font-size: var(--text-utility);
  letter-spacing: 0.08em;
}

.meta-separator {
  color: var(--colour-signal-orange);
  font-weight: 700;
}

.status-label {
  display: inline-flex;
  width: fit-content;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-1) var(--space-2);
  border: 1px solid currentColor;
  font-size: var(--text-meta);
}

.status-label--confirmed {
  border-color: var(--colour-steel-blue);
  background: var(--colour-steel-mist);
  color: var(--colour-steel-blue);
}

.status-label--advice {
  border-color: var(--colour-canvas-tan);
  background: var(--colour-field-paper);
  color: var(--colour-graphite);
}

.status-label--current {
  border-color: var(--colour-signal-orange);
  color: var(--colour-signal-orange);
}

.button {
  display: inline-flex;
  min-height: 2.75rem;
  max-width: 100%;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.625rem 0.875rem;
  border: 1px solid var(--colour-graphite);
  border-radius: var(--radius-control);
  background: var(--colour-graphite);
  color: var(--colour-paper-bright);
  font-family: var(--font-heading);
  font-size: var(--text-label);
  font-weight: 700;
  letter-spacing: 0.06em;
  line-height: 1.1;
  text-align: center;
  text-decoration: none;
  text-transform: uppercase;
  transition:
    border-color var(--transition-fast),
    background-color var(--transition-fast),
    color var(--transition-fast),
    transform var(--transition-fast);
}

.button:hover {
  border-color: var(--colour-sage-deep);
  background: var(--colour-sage-deep);
  color: var(--colour-paper-bright);
  text-decoration: none;
}

.button:active {
  transform: translateY(1px);
}

.button--primary {
  border-color: var(--colour-signal-orange);
  background: var(--colour-signal-orange);
  color: var(--colour-paper-bright);
}

.button--primary:hover {
  border-color: #a9481c;
  background: #a9481c;
  color: var(--colour-paper-bright);
}

.button--secondary {
  background: var(--colour-paper-bright);
  color: var(--colour-graphite);
}

.button--secondary:hover {
  border-color: var(--colour-signal-orange);
  background: var(--colour-paper-bright);
  color: var(--colour-signal-orange);
}

.button--outline {
  border-color: var(--colour-steel-blue);
  background: transparent;
  color: var(--colour-steel-blue);
}

.button--outline:hover {
  border-color: var(--colour-steel-blue);
  background: var(--colour-steel-mist);
  color: var(--colour-graphite);
}

.button--full {
  width: 100%;
}

.action-group {
  display: flex;
  min-width: 0;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-3);
}

.action-group > * {
  min-width: 0;
}

.rule {
  width: 100%;
  height: 1px;
  border: 0;
  background: var(--colour-rule-grey);
}

.rule--orange {
  height: 2px;
  background: var(--colour-signal-orange);
}

.coordinate-field {
  background-color: var(--colour-field-paper);
  background-image: var(--texture-coordinate);
  background-size: 2rem 2rem;
}

.topographic-field {
  background-color: var(--colour-field-paper);
  background-image: var(--texture-topographic);
}

.scroll-table {
  width: 100%;
  margin-block-end: var(--space-5);
  overflow-x: auto;
  border: var(--border);
  background: var(--colour-paper-bright);
  -webkit-overflow-scrolling: touch;
}

.scroll-table table {
  min-width: 38rem;
  margin: 0;
  border: 0;
}

.skip-link {
  position: fixed;
  z-index: 1000;
  top: var(--space-2);
  left: var(--space-2);
  transform: translateY(-200%);
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--colour-signal-orange);
  background: var(--colour-paper-bright);
  color: var(--colour-graphite);
  font-family: var(--font-heading);
  font-weight: 700;
  letter-spacing: 0.06em;
  text-decoration: none;
  text-transform: uppercase;
  transition: transform var(--transition-fast);
}

.skip-link:focus {
  transform: translateY(0);
}

@media (max-width: 56.25rem) {
  :root {
    --container-padding: var(--container-padding-mobile);
  }

  body {
    font-size: 1rem;
  }

  h1 {
    font-size: clamp(2.5rem, 11vw, 3.5rem);
  }

  h2 {
    font-size: clamp(2rem, 9vw, 2.75rem);
  }

  h3 {
    font-size: clamp(1.625rem, 7vw, 2.125rem);
  }

  .panel {
    padding: var(--space-4);
  }

  .action-group {
    align-items: stretch;
  }
}

@media (max-width: 40rem) {
  th,
  td {
    padding: var(--space-3);
  }

  .button {
    min-height: 2.75rem;
  }

  .surface--overlay {
    backdrop-filter: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behaviour: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behaviour: auto !important;
    transition-duration: 0.01ms !important;
  }
}